I seem to recall a discussion a while back on the forum, which suggested that the .22 ammunition discovered on the kitchen sideboard (as allegedly left there by Jeremy the previous evening), was dangerous to the twins.
The argument was that they were dangerous and if Jeremy had left them out, then Nevill would have put them away due to the danger they posed to the children.
I guess what we're saying (and what I recall NGB saying at the time), was that the loose bullets would not have posed much of a risk to the children, and therefore it is quite plausible that Nevill would not have put them away?